Providing optimal pattern of urban green space mapping using GIS Case Study 2 metropolitan area Karaj

Today, urban green space is considered the most important elements of the body cities, with population growth and urban development has been invaded by other land uses, Levels in cities of other users constantly is decreasing. As one of the most urban and urban parks play an important role in reducing air pollution and improving quality of life, The number and distribution of urban parks in such a way that all citizens have appropriate access to it, the main topic of discussion among urban planners is. In this study has attempted, the access area according to existing standards have been investigated
After determining the lack of green space in this respect and taking into account other factors affecting the positioning of the city, with appropriate pattern for optimal distribution of green space in the area 2 is using GIS. To achieve this goal, first location data is collected, Then established GIS database and maps for each criterion, the data layer in GIS became In order to model each of the layers according to their importance in the area of green space was allocated an appropriate weight For this purpose, Located on land for appropriate measures such as wasteland, Proximity to educational centers, cultural centers and population centers, access to network urban gas stations were. Then, for each of the factors in locating parks and green space, information layers in GIS environment was prepared and for each of the layers were weighted. Then, to patterning, to each of the data layers based on their importance in locating parks and green spaces by using AHP, was assigned an appropriate weight The results of integrating layers, the land area to select suitable locations for green space was classified into 5 classes It became clear land with a very good and good in the margins of the river, near residential centers, educational and regional communications network located